Mathematics
Junior High
Resolved
これあってますか?
1
ク、関数y=ax² について、その
変域が-3≦x≦のとき、
yの変域は-18≦y≦-8で
ある。トの値を求めよ。
-8=-2x-18=99
44:
a=-2
b=2
y=-22
2
8=-220²2
4=x2
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